In the title compound, C15H11N5O, which was prepared as part of a study to identify fluorogenic substrates for the Cu-catalysed azide-alkyne cycloaddition (CuAAC) reaction, the benzoxadiazole unit and the triazole ring are much more closely coplanar [dihedral angle = 10.92 (7)°] than either is to the benzyl group [dihedral angles = 69.13 (3)° and 78.20 (4)°, respectively]. The crystal structure features two different sets of weak intermolecular C-HN interactions between adjacent benzoxadiazole and triazole rings, forming a chain that propagates in the [-110] direction parallel to the ab plane.

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